Update CONTRIBUTING.md

Author: Oleksiy-Yakovenko

CONTRIBUTING.md

@@ -1,6 +1,6 @@
 # Contributing
 
-* Use Pull Requests.
-* Before working on big changes, talk with the devs on Slack.
-* We don\'t want half-done PRs, and won\'t complete them for you.
-* Read the [PR guidelines](https://github.com/Alexey-Yakovenko/deadbeef/wiki/Organizing-your-changes-for-pull-requests).
+* Use Github Pull Requests.
+* Before working on big changes, talk with the devs on Discord.
+* We aren't interested in completing half-finished PRs for you.
+* Read the [PR guidelines](https://github.com/DeaDBeeF-Player/deadbeef/wiki/Organizing-your-changes-for-pull-requests).